JP3028502B2 - Manufacturing method of large panel materials for environmental control - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to indoor and architectural spaces.
Can be naturally humidified, and is particularly suitable for forming an art-accommodating space for exhibiting or storing art objects.
And a method for producing a large panel material for environmental control .

[0002]

2. Description of the Related Art Conventionally, buildings in Japan have generally used materials having a natural humidity control function, such as natural wood, soil, and paper. For this reason, it had a function of adjusting the humidity in the room and a function of preventing condensation.

However, in recent RC constructions and the like, the function of absorbing and releasing moisture cannot be sufficiently utilized, and various obstacles related to moisture have come to occur. This problem is particularly apparent in spaces where art works are exhibited and stored.

[0004] The artwork must be placed in a space where the temperature and humidity are kept constant. For this reason, the temperature and humidity are adjusted by an air conditioner or a humidifier. However, with the exception of special buildings, such as museums, which are equipped with such equipment, these equipments must be used for 24 hours anniversary solely for the long-term storage of artworks constructed in general buildings. Keeping it running increases running costs.

For this reason, wood (particularly, porous natural wood such as hinoki, paulownia, cedar, etc.) is used as an interior finishing material for such a space, and the natural moisture absorbing and releasing function of the wood is used. Has also been done. If this works perfectly 24
This is because it is not necessary to operate the devices continuously for a time.

[0006]

Even if wood, which is one of the materials having a humidity control function, is used as an interior material in a RC building in recent years, the amount of wood used is limited. There is also a problem that the moisture absorption and desorption properties of itself deteriorate over time, and furthermore, they lack fire resistance and dimensional stability.

On the other hand, it has been pointed out that the scattering of alkali from concrete structures causes deterioration of art collections, and measures such as measures to reduce alkali are urgently needed.

The present invention has been made to overcome the above-mentioned disadvantages of such modern building materials, and has a function of adjusting humidity, preventing dew condensation on a wall surface, and reducing alkali. excellent wet and alkaline inhibition release, especially
For environmental adjustment suitable for forming a space for storing artworks
It is intended to provide a large panel material .

[0009]

Means for Solving the Problems According to the present invention, in manufacturing an environmental control panel having a humidity control function in which zeolite particles and fibers are dispersed in hardened cement, zeolite particles are produced. 0.1 fiber per 100 parts by weight
150 parts by weight of water beyond the blended and 100 parts by weight of less than 10 parts by weight of white cement 10-100 parts by weight were kneaded with the addition, the kneaded product, the panel shape, depositing soft sheet The present invention provides a method for producing a large-sized panel material for environmental control, which comprises compressing and pressing under pressure of 5 to 200 kg / cm ² and curing the obtained molded product.

[0010]

When the zeolite particles and fibers are hardened into a panel shape using a hydraulic hardening material such as cement or gypsum, the porous form inherent in the zeolite is retained in the cement matrix. Can be dispersed.

The fibers then serve to make the cement matrix porous. For this reason, the zeolite powder present in the hardened cement communicates with the atmosphere air through the cement layer, and the function of absorbing and releasing zeolite inherently works.

Zeolite has the property of adsorbing moisture in the air and the property that adsorbed moisture is easily desorbed. Zeolite absorbs and releases moisture when the relative humidity of the ambient air rises, and releases it when the relative humidity falls.
Therefore, if the environmental adjustment panel material of the present invention is placed in a certain space, the fluctuation of the relative humidity in the room can be suppressed and stabilized.

Further, even under the condition that the surface temperature of the material is lower than the dew point of air and dew condensation occurs, the high water absorption of zeolite prevents the formation of water droplets, and thus has the effect of preventing the formation of dew. That is, the present invention can be used under the same environment even under the condition where dew condensation occurs in a general concrete product.
No condensation occurs on the panel material.

Further, the zeolite in the material of the present invention has an effect of suppressing an alkaline environment by adsorbing moisture accompanied by an alkali scattered in the air and by an ion exchange effect of the zeolite. Therefore, also alkalis scattered from concrete buildings, path of the present invention
In the space for accommodating artworks using flannel material, an alkali suppressing action works, which can solve the problem described above that the scattering of alkali from the concrete structure causes deterioration of the art collection.

On the other hand, the fibers in the panel material of the present invention increase the pores in the molded body as described above, thereby enhancing the moisture absorption / desorption properties of the zeolite and reinforcing the strength of the molded body. Provide the action of

[0016] Therefore, even if a low-strength zeolite is incorporated in a large amount, the environment-control panel material of the present invention can maintain sufficient strength and maintain brittleness by the fiber reinforcing action.

In manufacturing the panel material of the present invention,
0.1 to 1 fiber per 100 parts by weight of zeolite powder
0 parts by weight and a hydraulic hardening material such as white cement 10-1
50 parts by weight are blended.

As the fiber, for example, vinylon fiber (PVA)
It is preferable to use short fibers (filaments) such as fibers, polypropylene fibers and carbon fibers. If the fiber is less than 0.1 part by weight with respect to 100 parts by weight of the zeolite powder, the effect of improving the permeability and strength of the material is small, and if it exceeds 10 parts by weight, kneading becomes difficult, and It is not preferable because the relative proportion of the body is reduced and the function as an environmental control material is reduced.

As the hydraulic hardening material, typically portland cement can be typically used, and in some cases, a hardening material such as gypsum may be used. Using white cement can make the finish beautiful and form a space for storing artworks.
It is preferable in terms of performance . If the hydraulic hardening material, for example, white cement is less than 10 parts by weight with respect to 100 parts by weight of the zeolite powder, the strength is insufficient, and in order to secure sufficient strength, 50 parts by weight is required.
% Or more . On the other hand, if the amount is more than 150 parts by weight, the air permeability of the material will be impaired, and the relative proportion of the zeolite powder will be reduced, thus lowering the function as an environmental control material. In this sense,
As shown in the Examples, white cement the zeo light powder or granular material
It is preferred to mix in an amount not exceeding.

In mixing the zeolite powder, it is preferable to use the zeolite in a state where the zeolite is impregnated with water in a saturated state by previously immersing the zeolite in water. When blended in a dry state, the water added during kneading is absorbed by the zeolite granules, which hinders hardening. The zeolite powder is preferably used in an activated state, which may be burned to a temperature of 500 ° C. or more.

In kneading, it is preferable to mix cement and zeolite adsorbed with water, add water, and further add fibers wetted with water and knead the mixture. The kneading is preferably performed using a rubber ball mixer that vibrates in a three-dimensional direction. The amount of water added is 10 to 150 parts by weight based on 100 parts by weight of the zeolite powder. Shown in Examples below
As described above, when the kneaded material is subjected to compression water-squeezing,
Since water is squeezed (dewatered), it is necessary to add excess water.
Essentially, 100 weight of zeolite powder as in the example
More than 100 parts by weight of water is required per part.

The obtained kneaded material is formed into a large panel shape, and most typically has a side of 9 as in the case of general interior materials.
It is formed into a panel shape having a thickness of 00 mm or more and a thickness of 15 mm or less . At that time, press molding can be performed. In other words, compression molding or compression squeezing molding is used.
It is preferable to carry out compression water-squeezing. Pressure of the Sai is rather'll be in the range of 5~200kg / cm ^2, compression exploitation
The pressing force in the case of water forming is 60 kg / cm as in the embodiment.
It should be about ² and it is actually 30-80kg /
cm ² may be used .

If the surface of the molded article does not become porous by the pressure molding and there is a risk of crushing the zeolite powder, a soft resin sheet is placed on the bottom and / or top of the mold. What is necessary is just to press-mold. Suitable resin sheets include sheet materials such as urethane, silicon, and synthetic rubber. As a result, the zeolite particles can be formed without crushing them.
The specific surface area important for the humidity control function can be secured.

As described above, according to the present invention, a molded article having a sufficient strength is obtained by utilizing the properties of zeolite such as moisture absorption / desorption, fire resistance, heat insulation, ion exchange and safety. A large panel material for environmental control can be obtained.

[0025]

EXAMPLE Zeolite having a particle size of 0.7 to 1.2 mm
Natural mordenite (Kasa specific gravity 0.6, true specific gravity 2.3)
Was kneaded using white Portland cement (specific gravity 3.15) as a hydraulic hardener and PVA fibers (fiber length 6 mm) as fibers.

Zeolite is 30 to 4 at 500 to 600 ° C.
One activated by heat treatment for 0 minutes was used. The formulation is as follows. Zeolite 103 parts by weight White Portland cement 100 parts by weight Polyvinyl alcohol fiber 2% of cement amount Water 112.5 parts by weight

At the time of kneading, zeolite impregnated with water and white cement were dry-kneaded with a mixer, poured into this, kneaded, and then water-impregnated fibers were charged and kneaded.

The obtained kneaded material was subjected to a compression force of 60 kg / cm using a mold having a urethane sheet having a thickness of 5 mm at the bottom.
² and compression-squeezed. Molding size is 900mm × 450
mm and a thickness of 12 mm. The obtained molded product was steam-cured at 60 ° C. and dried.

The obtained molded plate was placed in an artificial weather chamber, and the relative humidity was changed up and down as shown in the lower diagram of FIG. 1 under a constant dry-bulb temperature of 20 ° C. The weight change (moisture absorption / desorption g / m ² ) of the molded plate due to moisture absorption / desorption was measured. The results are shown in the upper diagram of FIG. For comparison, wood (cypress) was also measured under the same conditions, and is also shown in the upper diagram of FIG. From the results shown in FIG. 1, it can be seen that the molded plate of the present invention has a much higher moisture absorption and release amount than wood.

FIG. 2 shows the compressive strength and the bending strength of the formed plate. From the results shown in FIG. 2, it can be seen that the formed plate has sufficient strength as a secondary member due to fiber reinforcement.

Using the molded plate, a model room as shown in the lower diagram of FIG. 3 was made. The floor and ceiling were made of aluminum plywood, and the four side walls were made of the molded plate. The upper diagram in Fig. 3 shows the changes in the temperature (ambient temperature) and relative humidity (ambient relative humidity) of the ambient air in the model room, and the changes in the temperature (room temperature) and relative humidity (room relative humidity) in the model room. It shows the results of measurements over time.

From the results shown in the upper part of FIG. 3, it can be seen that even when the temperature and the relative humidity change, the relative humidity in the model room is kept constant at approximately 40%. That is, the molded article of the present invention is provided with an environment adjustment function for maintaining the relative humidity constant even when the environment changes.

FIG. 4 shows an example in which the molded plate is applied to a space where humidity control is important. As shown in the figure, the peripheral wall has a double wall structure, and the formed plate (zeolite panel) is used for the inner wall. The hollow layer between the walls in the double-walled structure serves as a buffer space to protect the room, and by the synergistic effect with the humidity control function by the zeolite panel,
It is effective in stabilizing indoor temperature and humidity.

[0034]

As described above, the panel material of the present invention is provided with a humidity adjustment function for keeping the humidity of the space constant, so that the environment such as art works is kept constant. It has a remarkable effect as a material constituting a space that needs to be processed.

Further, the panel material of the present invention has a high moisture absorption / desorption property of zeolite, which can not only control humidity in a room and a building space, but also prevent dew condensation, also has an effect of suppressing alkali content, and has a fire resistance. Because of its excellent corrosion resistance, strength, dimensional stability and durability, it is a suitable material as a permanent interior material with humidity control .
Since it is molded as a panel, its workability is good.

[Brief description of the drawings]

FIG. 1 is a graph showing a relationship between a change in relative humidity of an ambient atmosphere and a weight change (moisture absorption / desorption g / m ² ) due to moisture absorption / desorption of the material of the present invention.

FIG. 2 is a view showing the compressive strength and bending strength of the material of the present invention.

FIG. 3 is a graph showing changes over time in temperature and relative humidity in a model room experiment.

FIG. 4 is a schematic sectional view showing an example of a temperature and humidity control room using the material of the present invention.

Continuing from the front page (72) Inventor Hiroki 2-9-1, Tobita-Ki, Chofu-shi, Tokyo Kashima Construction Co., Ltd. (72) Inventor Yoshinobu Arai 2-191-1, Tobita-Ki, Chofu-shi, Tokyo Kashima Construction Co., Ltd.Technical Laboratory (72) Inventor Hiroshi Kasai Kashima Construction Co., Ltd.Technical Laboratory (72) Inventor Hiroshi Kasai Tokyo Metropolis (72) Inventor Tetsuo Sato 48 −25 (72) Inventor Hiroshi Matsumoto 3-5-1, Kozuru, Miyagino-ku, Sendai-shi, Miyagi Pref. JP-A-3-109244 (JP, A) JP-A-3-93662 (JP, A) JP-A-62-283851 (JP, A) JP-A-63-82701 (JP, A) JP-A-62-191456 (JP, A) JP-A-62-246848 (JP, A) JP-A-58-175618 (JP, A)

Claims (1)

(57) [Claims] 1. A method for manufacturing an environmental control panel having a humidity control function in which zeolite particles and fibers are dispersed in hardened cement, wherein 0.1 to 100 parts by weight of the zeolite particles are mixed with fibers of 0.1 to 0.1 parts by weight. 10
Parts by weight to the blended and 100 parts by weight of white cement less than 10 to 100 parts by weight was added Yue example 150 parts by weight of water and kneaded, the kneaded product, the panel shape, is applied to soft sheet A method for producing a large panel material for environmental control, comprising: compressing and pressing under pressure of 5 to 200 kg / cm ² and curing the obtained molded product.